Mel is excited to spend Christmas with her sister, Meredith (Jaime Pressly), who is on furlough from prison.
Since Joe never got around to telling "Nona" he and Tiffany got divorced, he's forced to beg Mel to pretend to be his trampy ex.
Mel must pose as Joe's ex-wife.
Joe works out an alternative payment plan when he begins dating the mom (Krista Allen) of one of his students.
Joe and Mel become cat burglars to reclaim Mel's personal item that was accidentally sold; Lennox's pen pal wants to meet her after his release from jail.
Mel invites her new suitor to stay at her place; Lennox struggles with her new internship.
Mel and Joe co-host "Good Morning, Toledo" and become a hit when they bicker over personal family details.
Mel and Joe learn that Lennox and Zander have taken their relationship to the next level, while Ryder struggles with his new "bad boy" reputation.
Mel severs ties with a friend whom, soon after, Joe begins to date.
Austin does not want to have children, Joe is confused by his new girlfriend, and Lennox works on her college essay.
Joe ruins Mel and Austin's romantic weekend plans, and Ryder is stuck studying with Leland.
Mel reconnects with a childhood friend, and Lennox learns that her blog sponsor uses unfair labor practices.
Joe tries to take his slowly moving relationship to the next level. Zander and Ryder start a graphic novel.
Joe gets a new job that quickly lands him in the middle of a political scandal.
Mel dates a guy whose ex-wife happens to be dating Joe.
Joe no longer feels needed as a nanny.